MXPA98000506A - Foam composition - Google Patents

Abstract

A foaming composition having improved levels of foaming and foam stability consisting essentially of (a) alkyl polyglycosides having the general formula I: wherein R 1 is a monovalent organic radical having from about 6 to about 30 carbon atoms; R2 is a divalent alkaline radical having from 2 to 4 carbon atoms, Z is a saccharide residue having 5 atoms of carbon, b is a number having a value from 0 to about 12, a is a number having a value of 1 to about 6, and (b) is a fatty alcohol sulfate having the general formula II: wherein R3 is an alkaline group containing 10 to 11 carbon atoms, and M is selected from the group consisting of alkali metals, alkaline earth metals and mixtures thereof, in an active ratio of% by weight of component (a) :( b) from about 10: 1 to about 1:10 approx.

Description

COMPOS ICON IS PUMO Field of the Invention The present invention relates generally to a foaming composition of surfactant. More particularly by mixing in an alkyl polyglycoside with a fatty alcohol sulfate in an average chain length distribution of 10 to 11 carbon atoms, a synergism is observed, which results in the formation of a surfactant composition which has improved levels of foamability and foam stability.

Background of the Invention It is known that various surfactants have been found useful in cleaning compositions, such as shower gel, shower gel, shampoos and light-weight detergents, such as dishwashing detergents. Good foamability is a prerequisite in these types of compositions. The surfactants most widely used in these types of compositions are anionic surfactants such as alkyl sulfates, alkyl ether sulfates, sulfonates, sulfosucianates and sarcosinates.

Although the use of anionic surfactants in these compositions allows to obtain the desirable properties, including good foamability, the degree of foam and its stability is still very often insufficient. The stability of the foam is related to the ability of the foam once formed to remain intact for extended periods of time, and thus improve the cleaning performance of the surfactant compositions.

It is sometimes advantageous to use mixtures of tenciactive agents in the cleaning compositions wherein the surfactants may offer several different functions, for example, one portion to improve the foamability and the other portion to adjust the viscosity.

However, mixtures of surfactants that are known typically provide a compromise when compared to the specific characteristics of the individual surfactants if they are used alone. For example, a mixture of more expensive surfactants such as amine, betaine and alkanolamide oxides which themselves provide good foamability with more expensive surfactants that provide poorer foamability, which will result in the formula of an agent composition. Tencioactivo that has an intermediate degree of foamability and poor foam stability.

Alkyl polyglycosides containing long chain alkyl groups are known nonionic surfactants. Moreover, as noted above, the skilled artisan knows that blends of surfactants generally show synergistic effects and often have better detergent properties than the sum total of the values of the individual components.

Detergents containing alkyl glucosides in combination with at least one typical anionic surfactant are disclosed in Patent Application EP 070 074. In addition, liquid detergents containing alkyl polyglycosides, certain nonionic surfactants and surfactants are also known. anionic in Patent Application EP 105 556.

While mixtures of alkyl glycosides and anionic surfactants sometimes result in the formula of a surfactant composition that produces adequate amounts of stable foam, even at higher levels of more stable foam is desired for many applications.

Accordingly, it is an object of the present invention to provide a surfactant composition having improved levels of foamability and foam stability.

Compendium of the Invention The present invention relates to a foamed composition having improved levels of foamability and foam stability containing (a) an alkyl polyglycoside having the general formula 1: wherein Ri is a monovalent organic radical having from about 6 to about 30 carbon atoms; .2 is a divalent alkaline radical having from 2 to 4 carbon atoms; Z is a saccharide residue having 5 or 6 carbon atoms; b is a number having a value from 0 to about 12; a is a number having a value from 1 to about 6, and (b) is a fatty alcohol sulfate having the general formula II: R20S03M wherein R3 is an alkaline group containing from 10 to 11 carbon atoms, and M is selected from the group consisting of the alkali metals, alkaline earth metals and mixtures thereof, in an active proportion of% by weight of components (a): (b) from about 10: 1 to about 1: 10.

The present invention also provides a process for the formulation of the foaming composition disclosed above that involves components of mixtures (a) and (b) in the active proportion of% by weight disclosed.

Description of the invention All numbers expressing amounts of ingredients or reaction conditions used herein are understood to be modified in all instances by the term "around" except for the operation examples or when otherwise indicated.

Suitable alkyl polyglycosides which are preferred for use in the present invention have the general formula I: where Z is a glucose residue and b is zero. These alkyl polyglycosides are commercially available, for example, as GLUCOPON® surfactants, or PLANTAREN® from Henkel Corporation, Arnbler, PA. , 19002. Examples of surfactants include but are not limited to the following: 1. GLUCOPON® 225 Surfactant - an alkyl polyglycoside in which the alkyl group contains from 8 to 10 carbon atoms and has a degree of average polymerization of 1.7. 2. GLUCOPON® 425 Active Agent-an alkyl polyglycoside in which the alkyl group contains 8 to 16 carbon atoms and basin with an average degree of polymerization of 1.55 3. GLUCOPON® 625 Active Agent-an alkyl polyglycoside in which the alkyl group contains 12 to 16 carbon atoms and has an average degree of polymerization of 1.6 4. Tencicactive agent APG® 325- an alkyl polyglycoside in which the alkyl group contains 9 to 11 carbon atoms and has an average degree of polymerization of 1.5 . GLUCOPON® 600 surfactant - an alkyl polyglycoside in which the alkyl group contains from 12 to 16 carbon atoms and has an average degree of polymerization of 1.4. 6. PLANTERN® 2000 Tenientective Agent - an alkyl polyglycoside of 8 to 16 carbon atoms in which the alkyl group contains from 8 to 16 carbon atoms and has an average degree of polymerization of 1.4. 7. PLANTAREN® 1300- Tenant Agent - an alkyl polyglycoside of 12 to 16 carbon atoms in which the alkyl group contains 12 to 16 carbon atoms and has a piorrtedi grade? of polymerization of 1.6.

Other examples include alkyl polyglycoside surfactant compositions comprising mixtures of compounds of formula VII wherein Z represents a moiety derived from a reduction saccharide containing 5 or 6 carbon atoms; a is a number that has a value of up to about 6; b is zero; and Ri is an alkyl radical having from 8 to 20 carbon atoms. The compositions are characterized in that they have properties of increased surfactants and a HLB in a range of about 10 to about 16 and a non-Flory distribution of glycosides, which comprises a mixture of an alkyl monoglycoside and a polyglycoside mixture of alkyl having varying degrees of polymerization of 2 and higher in progressively decreasing amounts, wherein the amount by weight of polyglycoside has a degree of polymerization of 2; or mixtures thereof with the polyglycoside having a degree of polymerization of 3, predominant in relation to the amount of monoglycoside; this composition has an average degree of polymerization of about 1.8 to about 3. These compositions, also known as acute alkyl polyglycosides, can be prepared by separating the monoglycoside from the original reaction mixture of alkyl monoglycoside and the polyglycosides. of alkyl after extracting the alcohol. This separation can be carried out by molecular distillation and would normally result in the extraction of about 70-95% by weight of the alkyl monoglycosides. After the extraction of the alkyl monoglycosides, the relative distribution of the various components, mono and poly glycosides, in the resulting product changes and the concentration in the product of polyglycosides relative to monoglycosides increases as the concentration of individual polyglycosides to the total, ie the fractions of DP2 and DP3 in relation to the sum of all DP fractions. These compositions are disclosed in U.S. Patent 5,266,690; the total content thereof is incorporated herein by reference.

Other alkyl polyglycosides which can be used in the compositions according to the invention are those in which the alkyl moiety contains from 6 to 18 carbon atoms and the average carbon chain length of the compositions is from about 9 up to about 14, comprising a mixture of two or more of at least binary alkyl polyglycoside components, wherein each binary component is present in the mixture in relation to its average carbon chain length in an amount effective to provide the composition of the surfactant with the average carbon chain length from about 9 to about 14 and wherein at least one or both binary components comprise a Flory distribution of polyglycosides derived from the reaction of the catalyzed acid of an alcohol contains from ß-20 carbon atoms and a suitable saccharide from which the exc that of alcohol.

The fatty alcohol sulfates suitable for use in the present invention have the general formula II; R20S03M wherein R3 is an alkaline group containing from 10 to 11 carbon atoms, and M is selected from the group consisting of the alkali metals, alkaline earth metals and mixtures thereof. The fatty alcohol sulfates can be prepared in the manner known by reaction of the corresponding alcohol component with a typical sulfating agent, more particularly sulfur trioxide or chlorosulfonic acid, and subsequent neutralization, preferably with alkali bases. , ammonia or alkyl bases, or substituted hydroxyalkyl ammonia bases. In a particular preferred embodiment of the present invention, the fatty alcohol sulfate is prepared by mixing a sodium lauryl sulfate having 12 carbon atoms as its main carbon chain, with sodium n-decyl sulfate having 12 carbon atoms. carbon atoms as its main carbon chain at an active radius of% by weight from 5: 1 to 1: 5, and preferably approximately 1: 1 respectively.

A particularly preferred alkyl polyglycoside is the type of the general formula I wherein Ri is a monovalent organic radical having from 8 to 16 carbon atoms; Z is a saccharide residue having 5 or 6 carbon atoms; b is zero and a is a number that has a value of 1. 55. Thus, in a particularly preferred embodiment of the present invention, a tencioastive agent composition having significantly improved levels of both foamability and foam stability can be formulated by mixing the preferred alkyl polyglycoside with the fatty alcohol sulfate. having an average distribution of the carbon chain length of 10 to 11 carbon atoms, in an active ratio of% by weight of alkyl polyglycoside to the fatty alcohol sulfate of about 1: 1.

This invention provides a foaming composition and a process for the formula, wherein the foam composition exhibits significantly improved levels of foam and foam stability. Once formulated, the composition of the surfactant can be employed in a variety of use compositions, wherein both high foaming and high foam stability are desired, such as in cleaning compositions or with agricultural foam producers! .

The present invention may be better understood from the following examples, all of which are intended to be illustrative only and do not mean that they unduly limit the scope of the invention. The percentages are made on the basis of weight by weight, unless otherwise indicated.

EXAMPLES Several compositions of surfactants were tested to determine the amount of foam they produce and their stability. Its composition and the results obtained are given in Table 1 below.

TABLE 1 A B height of 365 325 355 foam (mi; Transparent layer 110 115 105 height (ml) @ 3.5 min.

A: B, 1: 1 A: C, 1: 1 A: B: C mixture mixture of 2: 1: active assets active mixture height 415 425 450 foam (ml) Transparent layer height (ml) 95 92 83 @ 3.5 min.

A = GLUCOPAN ® 425 B = STANDAPOL® WAQ-LC (a product of sodium lauryl sulfate from Henkel Corp.) C = SULFOTEX® 110 (a product of n-decyl sodium sulfate from Henkel Corp.) The height of the foam generated by the different tenciactive agent compositions was measured by the following method. 150 grams of 0.05% active solution of each of the examples was prepared using deionized water. The temperature of each solution was then adjusted to approximately 30 ° C. Each solution was then stirred for approximately ten seconds in a Blender Waring at a constant high speed. Each stirred solution was then immediately placed in a 500 ml graduated cylinder. The initial foam height of each solution was then measured, and the results of this are noted in Table 1 above.

The results of the transparent layer are a measure of the stability of the foam after a period of about 3.5 minutes. The test involves the measurement of the transparent layer that appears below the foam in the graduated cylinder, approximately 3.5 minutes after the initial height of the foam is determined. The lower values of the height of the transparent layer indicate the highest stability of the foam.

As can be seen from the results obtained in Table 1, by mixing an alkyl polyglycoside with a fatty alcohol sulfate having an average carbon chain distribution of between 10 and 11 carbon atoms, both the amount of carbon Foam produced as its stability are significantly improved.

Claims (12)

1. A foamed composition containing improved levels of foaming and foam stability consisting essentially of: (a) an alkyl polyglycoside having the general formula 1: wherein Ri is a monovalent organic radical having from about 6 to about 30 carbon atoms; R2 is a divalent alkaline radical having from 2 to 4 carbon atoms; Z is a saccharide residue having 5 or 6 carbon atoms; b is a number having a value from 0 to about 12; a is a number having a value from 1 to about 6, and (b) is a fatty alcohol sulfate having the general formula II: R2OSO3M wherein R3 is an alkali group containing from 10 to 11 carbon atoms, and M is selected from the group consisting of the alkali metals, alkaline earth metals and mixtures thereof, in an active proportion of% by weight of components (a): (b) from about 10: 1 to about 1: 10 respectively.

2. The composition of claim 1 wherein formula 1 Ri is a monovalent organic radical having from 8 to 16 carbon atoms; b is zero; and a is a number with a value of 1.55.

3. The composition of claim 1, wherein the fatty alcohol sulfate is derived from a mixture of sodium lauryl sulfate and n-decyl sodium sulfate in an active proportion of% by weight.

4. The composition of claim 1, wherein the active ratio of% by weight of the components (a): (b) is about 1: 1.

5. The composition of claim 2, wherein the active ratio of% by weight of the components (a): (b) is about 1: 1.

6. A process for the formulation of a composition of surfactants having improved levels of foam and foam stability comprising the mixture of: (a) an alkyl polyglycoside having the general formula 1: wherein Ri is a monovalent organic radical having from about 6 to about 30 carbon atoms; R2 is a divalent alkaline radical having from 2 to 4 carbon atoms; Z is a saccharide residue having 5 or 6 carbon atoms; b is a number having a value from 0 to about 12; a is a number having a value of 1 to about 6, and (b) is a fatty alcohol sulfate having the general formula II: R2OSO3M wherein R3 is an alkali group containing from 10 to 11 carbon atoms, and M is selected from the group consisting of the alkali metals, alkaline earth metals and mixtures thereof, in an active proportion of% by weight of components (a): (b) from about 10: 1 to about 1: 10.

7. The process of claim 6, wherein formula 1 Ri is a monovalent organic radical having from 8 to 16 carbon atoms; b is zero; and a is a number with a value of 1.55.

8. The composition of claim 6, wherein the fatty alcohol sulfate is derived from a mixture of sodium lauryl sulfate and sodium n-decyl sulfate in an active ratio of about 1: 1.

9. The composition of claim 6, wherein the active ratio of% by weight of the components (a): (b) is about 1: 1.

10. The composition of claim 7, wherein the active ratio of% by weight of components (a): (b) is about 1: 1.

11. A foaming composition containing improved levels of foaming and foam stability consisting essentially of: (a) an alkyl polyglycoside having the general formula III: R4? (Z) to III wherein R is a monovalent organic radical having from 8 to 16 carbon atoms; Z is a saccharide residue having 5 or 6 carbon atoms; a is a number that has a value of 1.55 with (b) it is a fatty alcohol sulfate having the general formula II: wherein R3 is an alkali group containing from 10 to 11 carbon atoms, and M is selected from the group consisting of the alkali metals, alkaline earth metals and mixtures thereof, in an active proportion of% by weight of components (a): (b) of approximately 1: 1.

12. The composition of claim 11, wherein the fatty alcohol sulfate is derived from a mixture of sodium lauryl sulfate and a n-decyl sodium sulfate in an active ratio of% by weight of about 1: 1. SUMMARY OF THE INVENTION A foaming composition having improved levels of foaming and foam stability consisting essentially of (a) alkyl polyglycosides having the general formula I: wherein Ri is a monovalent organic radical having from about 6 to about 30 carbon atoms; Rz is a divalent alkaline radical having from 2 to 4 carbon atoms; Z is a saccharide residue having 5 or 6 carbon atoms; b is a number having a value from 0 to about 12; a is a number having a value from 1 to about 6, and (b) is a fatty alcohol sulfate having the general formula II: R2OSO3M II wherein R3 is an alkali group containing from 10 to 11 carbon atoms, and M is selected from the group consisting of the alkali metals, alkaline earth metals and mixtures thereof, in an active proportion of% by weight of components (a): (b) from about 10: 1 to about 1: 10.